The sum of 3rd and 15th elements of an arithmetic progression is equal to the sum of 6th, 11th and 13th elements of the same progression. Then which element of the series should necessarily be equal to zero?
Correct Answer : C
If log32, log3(2x – 5), log3(2x – 7/2) are in arithmetic progression, then the value of x is equal to
The 288th term of the series a, b, b, c, c, c, d, d, d, d, e, e, e, e, e, f, f, f, f, f, f…. is
The mean of 39 observations is 8. If one more observation of 48 is added to the data, the new mean will be